chore(deps): update actions/setup-node action to v6

Author: renovate[bot]

.github/workflows/ci.yml

@@ -18,7 +18,7 @@ jobs:
       - uses: pnpm/action-setup@v4
         name: Install pnpm
       - name: Install Node.js
-        uses: actions/setup-node@v5
+        uses: actions/setup-node@v6
         with:
           node-version: 24
           cache: 'pnpm'

.github/workflows/nightly.yml

@@ -22,7 +22,7 @@ jobs:
         uses: pnpm/action-setup@v4
 
       - name: Use Node.js LTS
-        uses: actions/setup-node@v5
+        uses: actions/setup-node@v6
         with:
           node-version: lts/*
           registry-url: https://registry.npmjs.org/

.github/workflows/release.yml

@@ -21,7 +21,7 @@ jobs:
         uses: pnpm/action-setup@v4
 
       - name: Set node
-        uses: actions/setup-node@v5
+        uses: actions/setup-node@v6
         with:
           node-version: latest
           cache: pnpm